An Introduction To Building Desktop Applications With Electron

Introduction

As for Whatsapp, Slack, and Visual Code Studio desktop versions you are more familiar with. Right? But have you also considered the other three widespread applications’ we all use? Thus, there is an overlap among these three particles and it is known as Electron. Js. While these apps are guided as Electron JS. It fills in the gap between the web and the desktop by dozing off the barriers to creating cross-platform apps for Linux, macOS, and Windows. There is no need to research into the intricate details and solve issues of each platform, all of this is now easier through Electron.

However, you need a basic understanding of Node.Js, and if you still need to, then approach Node Js Development Services or hire Node.js developers.

But before all that, read this article.

Why Should You Use Electron.Js?

Electron.js is an open-source framework. It is an outstanding platform for creating desktop apps. It uses web technologies such as HTML. CSS, and JavaScript.  Github maintains Electron. js reassures us that it is not just a mock project, but a serious job of highly experienced professional programmers. Electron.js can produce installers for all platforms from a single codebase, eliminating the need for installation. As a result, an application for certain platforms can be developed by a single development team. Another important benefit is that if you can construct a website with Electron.js, you can build a desktop program with it, therefore existing web developers/web development teams can quickly transition to desktop software developers.

Building An Electron.Js Application: Prerequisites

To start building apps with Electron.js, you’ll need the following items:
1. Basic proficiency of HTML.CSS, and JavaScript
2. Your system has Node.js installed.
3. Basic familiarity with Node.js
It would also help if you were to Prevent Crashing In Electron App.

Structure Of An Electron.Js App

1. Chromium is part of the Electron.js stack that is in charge of producing and displaying web pages. Web content is rendered in Electron.js’s Renderer process (more on this later), and you have access to all browser APIs and development tools, exactly like you would in a regular Google Chrome browser, thanks to the Chromium environment.

2.Node.js is the Electron.js component that offers you access to system features. Electron.js runs Node.js in its Main process (more on this later), allowing you access to everything Node.js has to offer, including filesystem interaction, operating system interaction, and more…

3.Electron.js includes an API of easy-to-use modules that allow you to do activities like building and showing a context menu, displaying desktop alerts, working with keyboard shortcuts, and more to enable developers to construct standard desktop experiences and interact seamlessly with native functions.

The Main And Renderer Processes

The Main process, which is basically a Node.js environment, is where an Electron.js application starts. This is where all native functionality interaction takes place.

The main procedure is in charge of producing web pages. It accomplishes this by establishing a new Electron.js BrowserWindow object. This has a new web page with its own Renderer process. Electron.js apps typically start with a default web page that serves as the app’s launch screen. If your program requires it, you can add more displays.

Each Renderer process is in charge of its own web page and is entirely separate from the other Renderer processes and the Main process. As a result, if one Renderer process dies, it has no effect on the other Renderer processes. By removing its BrowserWindow instance, a Renderer process can likewise be terminated from the Main process.

Electron Security – What Every Developer Must Know

1. Why Electron Security Matters More Than Traditional Web Security

Imagine your web application has xss vulnerability. Damage may be limited. However, in electron applications, the same vulnerability can reach file system access and system commands. Therefore, treating electron security as normal browser security can be a dangerous mistake.

Why security is critical:

• Access to local files
• System-level capabilities
• Higher security risks
• Desktop application privileges
• Greater attack surface

2. Disable nodeIntegration to Reduce Security Risks

Many beginners enable nodeIntegration for their convenience. This helps them directly access Node.js APIs from the renderer process. This seems easy in development. However, it creates unnecessary security risks in production applications.

Best practices:

• Keep nodeIntegration: false
• Avoid direct Node.js access
• Use preload scripts
• Limit renderer privileges
• Follow Electron defaults

3. Enable contextIsolation For Better Process Separation

The electron renderer and preload script handle different responsibilities. If both share the same javascript context. Then malicious scripts can indirectly reach privileged APIs. contextIsolation can significantly reduce these risks.

Benefits include:

• Better process isolation
• Protected preload scripts
• Reduced attack surface
• Improved application security
• Safer API exposure

4. Expose Only The APIs Your Renderer Actually Needs

It is not good design-wise to expose the whole system’s capabilities. directly to the renderer process. Firstly, developers should apply the principle of least privilege. Share only APIs that are really needed for application-specific features.

Expose only:

• Required APIs
• Safe utility methods
• Controlled IPC functions
• Read-only operations (where possible)
• Minimal permissions

Why Electron Gets Criticism and How to Fix It

1. Why Electron Apps Feel Heavy At Startup

Full chrome browsers are bundled with electrons. Therefore, an empty app can roughly take 50–120MB installed size. That’s the reason electrons are often called heavy framework.

Why this matters:

• Larger install size
• Higher memory usage
• Slower startup perception
• More system resources needed
• Real criticism from users

2. Lazy Load Modules To Speed Up Launch

Loading unnecessary modules at the time of app launch causes unavoidable delays. Better approach is to load them later.

Best practices:

• Move non-critical requires inside functions
• Load modules only when needed
• Keep startup path minimal
• Avoid blocking initialization
• Reduce launch delay

3. Use Worker Threads for CPU-Heavy Tasks

If heavy computation is there in the main task. Then the UI mostly gets frozen. The app seems unresponsive. The worker shifts the thread computation in the background. Making the thread smooth and responsive.

Use Worker Threads for:

• Image processing
• Data parsing
• Encryption tasks
• Large calculations
• Background computations

4. Reduce IPC Frequency to Prevent Bottlenecks

Sending continuous IPC on mousemove, keystroke and scroll events can create communication bottlenecks. Sending every tiny update can be expensive. Especially when there is high traffic between the renderer and the main process.

Optimize IPC by:

• Debouncing frequent events
• Throttling repeated calls
• Sending only necessary data
• Avoiding noisy updates
• Reducing message volume

5. Create Windows and Web Content Only When Needed

Unnecessary web content and hidden browser windows use up memory. whether or not users view them.

Memory-saving habits:

• Create windows on demand
• Destroy windows after use
• Avoid keeping hidden windows alive
• Load content only when required
• Free unused resources quickly

Conclusion

I hope the above article provides you powerful insights on electrons. If developers follow lazy loading, Worker Threads, IPC optimization and on-demand window creation. Electronic app startups will then be quick. The user interface is responsive. Reduce the amount of memory used